Airbags are used as a standard equipment of cars to strongly increase the safety of drivers and passengers on accidents. Recent developments include azide-free formulations and 'smart' airbag gas generators which enable a variable gas output. Guanidium azotetazolate (GZT) is investigated as a fuel and Cu(NO3).3Cu(OH)2 as an oxidizer and the resulting azide-free formulation produces a gas output of between 500 l/kg and 1000 l/kg. The use of V6Mo15O60, as a catalyst reduces the amount of harmful gases below accepted limits. Various grains were produced, ignited in closed vessels, and the burning rates measured. The investigations of a two-stage generator with igniter units consisting of two squibs and boosters showed a broad variety of pressure-times curves achievable by time delayed initiation. A simulation by a simplified model could even demonstrate the possibility to compensate the temperature dependency of the combustion by a delayed ignition. In static deployment and sled tests the prototype airbag module fulfilled the requirements.


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    Title :

    Development of an environmental friendly dual stage gas generator within an european project


    Additional title:

    Entwicklung eines umweltfreundlichen zweistufigen Gasgenerators im Rahmen eines europäischen Projektes


    Contributors:
    Schmid, H. (author) / Eisenreich, N. (author)


    Publication date :


    Size :

    12 Seiten, 9 Bilder, 16 Quellen


    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Development of an environmental friendly dual stage gas generator within an european project

    Schmid,H. / Eisenreich,N. / Fraunhofer-Institut Chemische Technologie,ICT,Pfinztal,DE | Automotive engineering | 2000


    Development of an Environmental Friendly Dual Stage Gas Generator within an European Project

    Eisenreich, N. / Schmid, H. | British Library Conference Proceedings | 2000



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